Camry After Googling around, I found two possible solutions, as apparently some others have had similar issues, as indeed the Jelly 2 isn't Verizon certified.
Whatever phone you activated the TracFone SIM with originally, try putting the SIM back in that phone, and let it register on the network, maybe make a call just to verify it's working. Now, WITHOUT turning that phone off (or at least try pulling the battery without turning it off the normal way), put the SIM into the Jelly 2 and see if it works.
If that fails (this should also be a more permanent solution), you can trick the network by changing the IMEI on the Jelly 2 to a Verizon certified one. May or may not work with one that isn't already registered on the Verizon network. However, I would make sure to never have both phones on at the same time if you do want to use both on the Verizon network, unless you want to be kicked off.
Dial*#*#08#*#*
to enter the "IMEI Tool" hidden menu and change the SIM IMEI.
Source:
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On most phones, changing the IMEI isn't so easy, but you're in luck here.
Furthermore, if you need another Verizon certified IMEI to use, so you don't kind of "sacrifice" a phone you already have, you could try sourcing a cheap broken Verizon or TracFone VoLTE compatible phone on eBay or similar. Or maybe you already have one? So long as it doesn't have a bad ESN/IMEI, any random VoLTE compatible Verizon or TracFone (Verizon network) branded (or unlocked Verizon certified) phone should work. E.g., an old broken Verizon LG G2 should work.
P.S. If you find yourself switching/transferring TracFone SIM/accounts around, TracFone Verizon SIMs can be reused after deactivation, if you didn't already know. Might save you having to buy another SIM kit.